@misc{indiciae64eb90c064de,
  title = {Invariants and Canonical Forms.},
  author = {E J Wilczynski},
  year = {1918},
  doi = {10.1073/pnas.4.10.300},
  url = {https://pubmed.ncbi.nlm.nih.gov/16576314/},
  note = {Source identifier: 16576314}
}